Exemplo n.º 1
0
void cmd_add(WINDOW *window, ToxWindow *self, Tox *m, int argc, char (*argv)[MAX_STR_SIZE])
{
    char *errmsg;

    if (argc < 1) {
        errmsg = "Invalid syntax.";
        line_info_add(self, NULL, NULL, NULL, SYS_MSG, 0, 0, errmsg);
        return;
    }

    char *id = argv[1];
    char msg[MAX_STR_SIZE];

    if (argc > 1) {
        char *temp = argv[2];

        if (temp[0] != '\"') {
            errmsg = "Message must be enclosed in quotes.";
            line_info_add(self, NULL, NULL, NULL, SYS_MSG, 0, 0, errmsg);
            return;
        }

        ++temp;
        temp[strlen(temp) - 1] = '\0';
        snprintf(msg, sizeof(msg), "%s", temp);
    } else {
        char selfname[TOX_MAX_NAME_LENGTH];
        uint16_t n_len = tox_get_self_name(m, (uint8_t *) selfname);
        selfname[n_len] = '\0';
        snprintf(msg, sizeof(msg), "Hello, my name is %s. Care to Tox?", selfname);
    }

    char id_bin[TOX_FRIEND_ADDRESS_SIZE] = {0};
    uint16_t id_len = (uint16_t) strlen(id);

    /* try to add tox ID */
    if (id_len == 2 * TOX_FRIEND_ADDRESS_SIZE) {
        size_t i;
        char xx[3];
        uint32_t x;

        for (i = 0; i < TOX_FRIEND_ADDRESS_SIZE; ++i) {
            xx[0] = id[2 * i];
            xx[1] = id[2 * i + 1];
            xx[2] = '\0';

            if (sscanf(xx, "%02x", &x) != 1) {
                errmsg = "Invalid ID.";
                line_info_add(self, NULL, NULL, NULL, SYS_MSG, 0, 0, errmsg);
                return;
            }

            id_bin[i] = x;
        }

        cmd_add_helper(self, m, id_bin, msg);
    } else {    /* assume id is a username@domain address and do DNS lookup */
        dns3_lookup(self, m, id_bin, id, msg);
    }
}
Exemplo n.º 2
0
void cmd_add(WINDOW *window, ToxWindow *self, Tox *m, int argc, char (*argv)[MAX_STR_SIZE])
{
    if (argc < 1) {
        line_info_add(self, NULL, NULL, NULL, SYS_MSG, 0, 0, "Tox ID or address required.");
        return;
    }

    const char *id = argv[1];
    char msg[MAX_STR_SIZE];

    if (argc > 1) {
        if (argv[2][0] != '\"') {
            line_info_add(self, NULL, NULL, NULL, SYS_MSG, 0, 0, "Message must be enclosed in quotes.");
            return;
        }

        /* remove opening and closing quotes */
        char tmp[MAX_STR_SIZE];
        snprintf(tmp, sizeof(tmp), "%s", &argv[2][1]);
        int len = strlen(tmp) - 1;
        tmp[len] = '\0';
        snprintf(msg, sizeof(msg), "%s", tmp);
    } else {
        char selfname[TOX_MAX_NAME_LENGTH];
        tox_self_get_name(m, (uint8_t *) selfname);

        size_t n_len = tox_self_get_name_size(m);
        selfname[n_len] = '\0';
        snprintf(msg, sizeof(msg), "Hello, my name is %s. Care to Tox?", selfname);
    }

    char id_bin[TOX_ADDRESS_SIZE] = {0};
    uint16_t id_len = (uint16_t) strlen(id);

    /* try to add tox ID */
    if (id_len == 2 * TOX_ADDRESS_SIZE) {
        size_t i;
        char xx[3];
        uint32_t x;

        for (i = 0; i < TOX_ADDRESS_SIZE; ++i) {
            xx[0] = id[2 * i];
            xx[1] = id[2 * i + 1];
            xx[2] = '\0';

            if (sscanf(xx, "%02x", &x) != 1) {
                line_info_add(self, NULL, NULL, NULL, SYS_MSG, 0, 0, "Invalid Tox ID.");
                return;
            }

            id_bin[i] = x;
        }

        cmd_add_helper(self, m, id_bin, msg);
    } else {    /* assume id is a username@domain address and do DNS lookup */
        dns3_lookup(self, m, id_bin, id, msg);
    }
}
Exemplo n.º 3
0
Arquivo: dns.c Projeto: jpoler/toxic
/* Does DNS lookup for addr and puts resulting tox id in id_bin. */
void *dns3_lookup_thread(void *data)
{
    ToxWindow *self = t_data.self;

    char inputdomain[MAX_STR_SIZE];
    char name[MAX_STR_SIZE];

    int namelen = parse_addr(t_data.addr, name, inputdomain);

    if (namelen == -1) {
        dns_error(self, "Must be a Tox ID or an address in the form username@domain");
        killdns_thread(NULL);
    }

    char DNS_pubkey[DNS3_KEY_SIZE];
    char domain[MAX_DOMAIN_SIZE];

    int match = get_domain_match(DNS_pubkey, domain, inputdomain);

    if (match == -1) {
        dns_error(self, "Domain not found.");
        killdns_thread(NULL);
    }

    void *dns_obj = tox_dns3_new((uint8_t *) DNS_pubkey);

    if (dns_obj == NULL) {
        dns_error(self, "Core failed to create DNS object.");
        killdns_thread(NULL);
    }

    char string[MAX_DNS_REQST_SIZE + 1];
    uint32_t request_id;

    int str_len = tox_generate_dns3_string(dns_obj, (uint8_t *) string, sizeof(string), &request_id, 
                                           (uint8_t *) name, namelen);

    if (str_len == -1) {
        dns_error(self, "Core failed to generate DNS3 string.");
        killdns_thread(dns_obj);
    }

    string[str_len] = '\0';

    u_char answer[PACKETSZ];
    char d_string[MAX_DOMAIN_SIZE + MAX_DNS_REQST_SIZE + 10];

    /* format string and create dns query */
    snprintf(d_string, sizeof(d_string), "_%s._tox.%s", string, domain);
    int ans_len = res_query(d_string, C_IN, T_TXT, answer, sizeof(answer));

    if (ans_len <= 0) {
        dns_error(self, "DNS query failed.");
        killdns_thread(dns_obj);
    }

    char ans_id[MAX_DNS_REQST_SIZE + 1];

    /* extract TXT from DNS response */
    if (parse_dns_response(self, answer, ans_len, ans_id) == -1)
        killdns_thread(dns_obj);

    char encrypted_id[MAX_DNS_REQST_SIZE + 1];
    int prfx_len = strlen(TOX_DNS3_TXT_PREFIX);

    /* extract the encrypted ID from TXT response */
    if (strncmp(ans_id, TOX_DNS3_TXT_PREFIX, prfx_len) != 0) {
        dns_error(self, "Bad DNS3 TXT response.");
        killdns_thread(dns_obj);
    }

    memcpy(encrypted_id, ans_id + prfx_len, ans_len - prfx_len);

    if (tox_decrypt_dns3_TXT(dns_obj, (uint8_t *) t_data.id_bin, (uint8_t *) encrypted_id, 
                             strlen(encrypted_id), request_id) == -1) {
        dns_error(self, "Core failed to decrypt DNS response.");
        killdns_thread(dns_obj);
    }

    pthread_mutex_lock(&Winthread.lock);
    cmd_add_helper(self, t_data.m, t_data.id_bin, t_data.msg);
    pthread_mutex_unlock(&Winthread.lock);

    killdns_thread(dns_obj);
    return 0;
}